Smartphones aren't cheap, but for many workers, they represent necessity, not luxury. Anxious job seekers, in particular, say they're indispensable. "I absolutely got it for the job search," one woman said. "I don't know if it's really an expectation, but if another job candidate returns an e-mail message eight hours later, and you get back immediately with a message that says 'Sent from my iPhone,' I think it has to be a check box in your favor."
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